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Camping Fridge South Africa

Flex 12v VSR Relay 50A

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Regular price R 459.00
Sale price R 459.00 Regular price
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The Flex Voltage Sensitive Relay (VSR) 50A offers a convenient solution for charging two batteries at the same time. The VSR operates by monitoring the main battery's voltage, and when the engine is started and the voltage exceeds 13.2 volts, the VSR engages after 15 seconds. This allows the two battery banks (start and aux) to be charged simultaneously, ensuring that both batteries are fully charged and ready to be used.

This system eliminates the possibility of draining the start battery, which can be especially problematic if you're out on the road. When the engine is turned off and the combined voltage drops below 12.8 volts, the VSR disengages, separating the batteries and preventing any further discharge of the start battery. This ensures that you'll always have a fully charged battery ready to start the engine and get you back on the road again.

In summary, the Flex Voltage Sensitive Relay (VSR) offers a reliable, efficient, and user-friendly solution for charging two batteries, protecting you from being stranded in the middle of nowhere.



  • Simultaneously charges two batteries
  • Engages after 15 sec when main battery voltage exceeds 13.2 volts
  • Disengages when combined voltage drops below 12.8 volts
  • Separates batteries to prevent start battery drain
  • Reliable, efficient, and user-friendly



 Voltage:  Operates on 12 DC only
Cut-in Voltage: 13.2V
Cut-out Voltage: 12.8V
Continuous Max Current: 50A
Current Draw – Charging: 250ma
Current Draw – Standby: 10ma
Delay: Cut In 15 Seconds / Disconnect 15 Seconds
Voltage Drop: Nil
Recommended Fuse: 50Amp
Power Studs: M6 brass with tin plate
Nuts: Brass with Nickel plate
Torque Settings: 6NM
Surge Protection: Built-in
Dimensions: 85L x 45W x 40H mm
Weight: 170g

Frequently Asked Questions

  • Shipping

    This product qualifies for R99.00 shipping in South Africa. Delivery usually takes 2 - 4 working days. You will be able to track your order once dispatched from our warehouse.

  • Hassle-Free Exchanges

    If you are not completely satisfied with your purchase you can return it in 7 working days for a full refund.